Jeep guy with tech Request

[tdkask]

I'm a Jeep CJ7 guy reaching out to the EB crowd for help. ;D

I am building a custom axle for my Jeep which will modify a Scout II D44 to fit my needs. I'd rather use a common axle than have a custom one cut, so started my homework. Ultimately the best result for a stock axle to use in my build was the 71-77 EB D-44 RH inner for length and spline, though I don't know the diameter or width at yoke.

I was hoping someone has a database or a shaft sitting around and could let me know how wide the yoke was and what the shaft diameter is, and whether it tapers. I may also have to do some homework on seal sizes, but tackle that when I have the axle in hand.

Also, if anyone has a stock axle for sale cheap I could just figure it all out myself. Thanks.

David

 

[Edger6]

Hey man I have a d44 if u want to come take a look. Its on tne frame but its a rolling chassis as of now it is completly assembled. im in hampton.

 

[tdkask]

I really appreciate that, but need to see the shaft removed. I need to know the diamer of the shaft at seal and after seal (inside tube) to see if it's comparable with the Scout II inner shaft on the other side. Also there is minor concern for the yoke width so it will fit through the smaller Scout II outer knuckle (Same as D30).

For more explanation, the Scout II axle is somewhat of a hybrid D44/D30 with the outer being D30. I just need to shorten the right amount to match this axle and bolt in... Thanks for the help.

 

[Kyle.malone]

I wouldn't waste my time on a D30/D44 hybrid.. You can get a Full width D44 high pinion and shorten the long tube side and have alot stouter of an axle for about the same amount of cost. But that's my $0.02.

 

[tdkask]

I wouldn't waste my time on a D30/D44 hybrid.. You can get a Full width D44 high pinion and shorten the long tube side and have alot stouter of an axle for about the same amount of cost. But that's my $0.02.

I definitely realize this and could probably spend just a little more and get a D60... but have the Scout axle already and is all in great shape. The outer parts, though somewhat weaker D30, are being re-utilized from my stock D30 and are "free". All of my costs are in this one axle shaft, and at stock axle prices aren't that expensive. It is an overall upgrade to me and stronger than the tubes and the case of my stock Jeep D-30 LP, and is enough for my mild wheeling needs... and will be at the cost of one inner shaft, if you don't count universals, bearings, and seals (all needed for any axle)

Thanks for any info available.

 

[CustomK]

Try looking up the Scout Build on PowerBlocktv.com I think they did what you are trying to do. Hope that helps

 

[tdkask]

No... I can't recall if the rebuilt the axle or if they replaced it, but they didn't narrow it to go back into their scout.

My goal is to narrow it to approximate Jeep width using a EB long side inner in place of the Scout long side inner. It is .7 inches narrower than my Jeep long side inner, but the D44 carrier is wider than the D30, so I will just about balance.

A few people have done this mod and just chopped the axle tube and had a custom shaft cut. It makes more sense me to build the axle around an appropriate shaft if it's within a quarter inch and have easy replacement shafts. This is all, of course, assuming the axle shaft diameter and seal diameter are consistent throughout D44s of that era. That is the reason I'm here asking the EB guys... no-one is more likely to know EB axles better than this crowd.

Thanks again.

 

[Oatmeal]

Maybe this will help?: http://77cj.littlekeylime.com/web_rs44.html
However, if you're using stock EB axles you'll be getting the weaker 260X joints and if I'm not mistaken, Scout II D44s use the bigger 297/760X joints.

The axle yoke widths should be the same, it's the caps and crosses that are bigger in diameter.

A cut and resplined (Currie charges $85) GM K5/K10 drivers side (long side) disc brake D44 shaft should fit your needs....that's what I have in my Bronco, the passenger side (short side) fits in unmodified.

Scout II stub shafts are 27 spline like your Jeep's present D30 and will work with your hubs.

Are you considering using your knuckles on the Scout axle?

The Scout uses a unique 8 bolt spindle and I'm not sure if the Scout stub shafts (to accommodate the bigger 297/760X joints) will fit the Jeep spindles however, FSJ (Wagoneer) stub shafts might work?

Anyway, good luck!......I'd like to know how it works out.

By the way....I own a Jeep too

Hans

 

[broncodriver99]

I have to pull my front end apart to add some camber correction shims. Will probably do it tomorrow/this afternoon. I am happy to take some pics and any measurements you need. PM me an email address so I can send them to you.

Also, if the Scout running gear uses the larger 297x/760 joint(I don't know?) you could pick up one of the HD Spicer 4340 chromoly inner shafts from one of the Bronco vendors. They utilize the larger 297X/760 joints that should mate up to your stock outer shaft if it uses the larger ujoint.

Let me know what all measurements you need and I can get them for you.

I was going to give you a hard time about being a Jeep guy, but just remembered that I have a J10 and FSJ Cherokee in the back yard.;D

 

[tdkask]

Maybe this will help?: http://77cj.littlekeylime.com/web_rs44.html
However, if you're using stock EB axles you'll be getting the weaker 260X joints and if I'm not mistaken, Scout II D44s use the bigger 297/760X joints.

The axle yoke widths should be the same, it's the caps and crosses that are bigger in diameter.

A cut and resplined (Currie charges $85) GM K5/K10 drivers side (long side) disc brake D44 shaft should fit your needs....that's what I have in my Bronco, the passenger side (short side) fits in unmodified.

Scout II stub shafts are 27 spline like your Jeep's present D30 and will work with your hubs.

Are you considering using your knuckles on the Scout axle?

The Scout uses a unique 8 bolt spindle and I'm not sure if the Scout stub shafts (to accommodate the bigger 297/760X joints) will fit the Jeep spindles however, FSJ (Wagoneer) stub shafts might work?

Anyway, good luck!......I'd like to know how it works out.

By the way....I own a Jeep too

Hans

I have to pull my front end apart to add some camber correction shims. Will probably do it tomorrow/this afternoon. I am happy to take some pics and any measurements you need. PM me an email address so I can send them to you.

Also, if the Scout running gear uses the larger 297x/760 joint(I don't know?) you could pick up one of the HD Spicer 4340 chromoly inner shafts from one of the Bronco vendors. They utilize the larger 297X/760 joints that should mate up to your stock outer shaft if it uses the larger ujoint.

Let me know what all measurements you need and I can get them for you.

I was going to give you a hard time about being a Jeep guy, but just remembered that I have a J10 and FSJ Cherokee in the back yard.;D

Thanks guys. I found USA Standard Gear brand (PN: ZA W38810) that calls for a 297x. I don't know if is a mistake/upgrade/stock U-joint/etc???

I will only use the EB long side inner shaft, with everything else remaining Scout II. FOr what it's worth, the Scout II uses D30 outers and is all the interchangeable... I will reuse my D30 outer knuckles, Scout outer shafts. I can retain all old outer shafts, spindles, brakes as spares as they are same.

As for measurements, I just need to know shaft diameter and shaft seal diameter (where it sits in the inner knuckle)... pretty sure they will be constant for all common D44. You can email me at tdkask at cox dot net (obviously converted to standard email format... lol)

For what its worth, when I bought this Jeep almost a year ago I looked real hard at EB's (why I was registered here so long ago... lol) but had to go with my budget. Similar condition EB costs about twice what a CJ7 does...

Taking any EB donated, though.

 

[broncodriver99]

Note that EB axles don't use an outer axle tube seal. Some of the early D30 axles did, but the later D44 axles did not. There is just a slinger slipped on to the axle. When I went to the spicer HD shafts in my other Bronco the provision for the slinger was no longer there.

 

[Oatmeal]

........I will only use the EB long side inner shaft, with everything else remaining Scout II.......

That's where you're going to run into problems.

According to my info, Scout II D44s use the bigger 297/760X joints and all early Bronco (70 1/2-77) D44s only came with the smaller 260X joint, so your Scout's stub shaft and the early Bronco inner shaft won't mate up.

You could have the EB shaft's yoke bored to the bigger size but, if you're going to spend time and money to have that done, you'd be better off having the GM shaft ($15-20 at most self serve junk yards) cut and resplined and get a stronger shaft for a little more money....plus they're a lot easier to find than Bronco shafts!

Grab two and keep a spare with you

Hans

 

[broncodriver99]

Didn't get the Bronco pulled apart today. I realized as I started that I had the wrong camber shims. The correct larger sized ones won't be here for a couple of days.

 

[MyOriginal66]

This thread proves how great it is to be a CB member... Good luck with the CJ.

 

[broncodriver99]

Ok. Got my front end pulled apart. Here are some pics and some mesurements.

The inner seal surface(next to the splines) is 1.32" diameter and the seal surface is 1.14" wide.

The small area of the axle(minimum diameter) is 1.10"

The outer seal area(where the Bronco runs a slinger/no seal) is 1.385"

The yoke diameter(inner and outer) is 3.225" (mesured at the ujoint caps) So, I would think about a 3.5" diameter hole would be necessary for clearance.